var sina = {
    $: function(objName) {
        if (document.getElementById) {
            return eval('document.getElementById("' + objName + '")')
        } else {
            return eval('document.all.' + objName)
        }
    },
    isIE: navigator.appVersion.indexOf("MSIE") != -1 ? true : false,
    addEvent: function(l, i, I) {
        if (l.attachEvent) {
            l.attachEvent("on" + i, I)
        } else {
            l.addEventListener(i, I, false)
        }
    },
    delEvent: function(l, i, I) {
        if (l.detachEvent) {
            l.detachEvent("on" + i, I)
        } else {
            l.removeEventListener(i, I, false)
        }
    },
    readCookie: function(O) {
        var o = "",
            l = O + "=";
        if (document.cookie.length > 0) {
            var i = document.cookie.indexOf(l);
            if (i != -1) {
                i += l.length;
                var I = document.cookie.indexOf(";", i);
                if (I == -1) I = document.cookie.length;
                o = unescape(document.cookie.substring(i, I))
            }
        }
        return o
    },
    writeCookie: function(i, l, o, c) {
        var O = "",
            I = "";
        if (o != null) {
            O = new Date((new Date).getTime() + o * 3600000);
            O = "; expires=" + O.toGMTString()
        }
        if (c != null) {
            I = ";domain=" + c
        }
        document.cookie = i + "=" + escape(l) + O + I
    },
    readStyle: function(I, l) {
        if (I.style[l]) {
            return I.style[l]
        } else if (I.currentStyle) {
            return I.currentStyle[l]
        } else if (document.defaultView && document.defaultView.getComputedStyle) {
            var i = document.defaultView.getComputedStyle(I, null);
            return i.getPropertyValue(l)
        } else {
            return null
        }
    }
};

//滚动图片构造函数
//UI&UE Dept. mengjia
//080623
function ScrollPic(scrollContId, arrLeftId, arrRightId, dotListId) {
    this.scrollContId = scrollContId;
    this.arrLeftId = arrLeftId;
    this.arrRightId = arrRightId;
    this.dotListId = dotListId;
    this.dotClassName = "dotItem";
    this.dotOnClassName = "dotItemOn";
    this.dotObjArr = [];
    this.pageWidth = 0;
    this.frameWidth = 0;
    this.speed = 10;
    this.space = 10;
    this.pageIndex = 0;
    this.autoPlay = true;
    this.autoPlayTime = 5;
    var _autoTimeObj, _scrollTimeObj, _state = "ready";
    this.stripDiv = document.createElement("DIV");
    this.listDiv01 = document.createElement("DIV");
    this.listDiv02 = document.createElement("DIV");
    if (!ScrollPic.childs) {
        ScrollPic.childs = []
    }
    this.ID = ScrollPic.childs.length;
    ScrollPic.childs.push(this);
    this.initialize = function() {
        if (!this.scrollContId) {
            throw new Error("必须指定scrollContId.");
            return
        }
        this.scrollContDiv = sina.$(this.scrollContId);
        if (!this.scrollContDiv) {
            throw new Error("scrollContId不是正确的对象.(scrollContId = \"" + this.scrollContId + "\")");
            return
        }
        this.scrollContDiv.style.width = this.frameWidth + "px";
        this.scrollContDiv.style.overflow = "hidden";
        this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
        this.scrollContDiv.innerHTML = "";
        this.scrollContDiv.appendChild(this.stripDiv);
        this.stripDiv.appendChild(this.listDiv01);
        this.stripDiv.appendChild(this.listDiv02);
        this.stripDiv.style.overflow = "hidden";
        this.stripDiv.style.zoom = "1";
        this.stripDiv.style.width = "32766px";
        this.listDiv01.style.cssFloat = "left";
        this.listDiv02.style.cssFloat = "left";
        sina.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPic.childs[" + this.ID + "].stop()"));
        sina.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPic.childs[" + this.ID + "].play()"));
        if (this.arrLeftId) {
            this.arrLeftObj = sina.$(this.arrLeftId);
            if (this.arrLeftObj) {
                sina.addEvent(this.arrLeftObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].rightMouseDown()"));
                sina.addEvent(this.arrLeftObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"));
                sina.addEvent(this.arrLeftObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"))
            }
        }
        if (this.arrRightId) {
            this.arrRightObj = sina.$(this.arrRightId);
            if (this.arrRightObj) {
                sina.addEvent(this.arrRightObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].leftMouseDown()"));
                sina.addEvent(this.arrRightObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"));
                sina.addEvent(this.arrRightObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"))
            }
        }
        if (this.dotListId) {
            this.dotListObj = sina.$(this.dotListId);
            if (this.dotListObj) {
                var pages = Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4),
                    i, tempObj;
                for (i = 0; i < pages; i++) {
                    tempObj = document.createElement("span");
                    this.dotListObj.appendChild(tempObj);
                    this.dotObjArr.push(tempObj);
                    if (i == this.pageIndex) {
                        tempObj.className = this.dotClassName
                    } else {
                        tempObj.className = this.dotOnClassName
                    }
                    tempObj.title = "第" + (i + 1) + "页";
                    sina.addEvent(tempObj, "click", Function("ScrollPic.childs[" + this.ID + "].pageTo(" + i + ")"))
                }
            }
        }
        if (this.autoPlay) {
            this.play()
        }
    };
    this.leftMouseDown = function() {
        if (_state != "ready") {
            return
        }
        _state = "floating";
        _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveLeft()", this.speed)
    };
    this.rightMouseDown = function() {
        if (_state != "ready") {
            return
        }
        _state = "floating";
        _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveRight()", this.speed)
    };
    this.moveLeft = function() {
        if (this.scrollContDiv.scrollLeft + this.space >= this.listDiv01.scrollWidth) {
            this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + this.space - this.listDiv01.scrollWidth
        } else {
            this.scrollContDiv.scrollLeft += this.space
        }
        this.accountPageIndex()
    };
    this.moveRight = function() {
        if (this.scrollContDiv.scrollLeft - this.space <= 0) {
            this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - this.space
        } else {
            this.scrollContDiv.scrollLeft -= this.space
        }
        this.accountPageIndex()
    };
    this.leftEnd = function() {
        if (_state != "floating") {
            return
        }
        _state = "stoping";
        clearInterval(_scrollTimeObj);
        var fill = this.pageWidth - this.scrollContDiv.scrollLeft % this.pageWidth;
        this.move(fill)
    };
    this.rightEnd = function() {
        if (_state != "floating") {
            return
        }
        _state = "stoping";
        clearInterval(_scrollTimeObj);
        var fill = -this.scrollContDiv.scrollLeft % this.pageWidth;
        this.move(fill)
    };
    this.move = function(num, quick) {
        var thisMove = num / 5;
        if (!quick) {
            if (thisMove > this.space) {
                thisMove = this.space
            }
            if (thisMove < -this.space) {
                thisMove = -this.space
            }
        }
        if (Math.abs(thisMove) < 1 && thisMove != 0) {
            thisMove = thisMove >= 0 ? 1 : -1
        } else {
            thisMove = Math.round(thisMove)
        }
        var temp = this.scrollContDiv.scrollLeft + thisMove;
        if (thisMove > 0) {
            if (this.scrollContDiv.scrollLeft + thisMove >= this.listDiv01.scrollWidth) {
                this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + thisMove - this.listDiv01.scrollWidth
            } else {
                this.scrollContDiv.scrollLeft += thisMove
            }
        } else {
            if (this.scrollContDiv.scrollLeft - thisMove <= 0) {
                this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - thisMove
            } else {
                this.scrollContDiv.scrollLeft += thisMove
            }
        }
        num -= thisMove;
        if (Math.abs(num) == 0) {
            _state = "ready";
            if (this.autoPlay) {
                this.play()
            }
            this.accountPageIndex();
            return
        } else {
            this.accountPageIndex();
            setTimeout("ScrollPic.childs[" + this.ID + "].move(" + num + "," + quick + ")", this.speed)
        }
    };
    this.next = function() {
        if (_state != "ready") {
            return
        }
        _state = "stoping";
        this.move(this.pageWidth, true)
    };
    this.play = function() {
        if (!this.autoPlay) {
            return
        }
        clearInterval(_autoTimeObj);
        _autoTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].next()", this.autoPlayTime * 1000)
    };
    this.stop = function() {
        clearInterval(_autoTimeObj)
    };
    this.pageTo = function(num) {
        if (_state != "ready") {
            return
        }
        _state = "stoping";
        var fill = num * this.frameWidth - this.scrollContDiv.scrollLeft;
        this.move(fill, true)
    };
    this.accountPageIndex = function() {
        this.pageIndex = Math.round(this.scrollContDiv.scrollLeft / this.frameWidth);
        if (this.pageIndex > Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4) - 1) {
            this.pageIndex = 0
        }
        var i;
        for (i = 0; i < this.dotObjArr.length; i++) {
            if (i == this.pageIndex) {
                this.dotObjArr[i].className = this.dotClassName
            } else {
                this.dotObjArr[i].className = this.dotOnClassName
            }
        }
    }
}